A high-strength tungsten-containing nickel-based superalloy material and its preparation method and application

Abstract

The invention provides a high-strength tungsten-containing nickel-based high-temperature alloy material and a preparation method and application thereof. The alloy material comprises the following elements including, by weight, 0.07%-0.09% of C, 17.15%-19.35% of Cr, 2.95%-3.25% of Mo, 6.18%-7.28% of Co, 6.10%-6.30% of W, 1.70%-1.80% of Al, 0.75%-1.05% of Nb, 14.7% / -16.3% of Fe, and the balance Niand inevitable impurities; and the impurities comprise the following components including, by weight, less than or equal to 0.002% of P, less than or equal to 0.002% of S, less than or equal to 0.002%of N, and less than or equal to 0.05% of Cu. The high-temperature alloy material has the excellent high-temperature mechanical strength and the excellent high-temperature endurance performance, can be used as a material of turbine engine blade steel and has the good high-temperature strength performance.

Description

technical field [0001] The invention relates to a nickel-based superalloy material, in particular to a high-strength tungsten-containing nickel-based superalloy material and a preparation method and application thereof. Background technique [0002] High-temperature alloy materials refer to high-temperature metal materials that work for a long time above 760-1500°C and under certain stress conditions. According to different temperature conditions, high-temperature alloy materials can be divided into three categories: 760°C high-temperature materials, 1200°C high-temperature materials and 1500°C ℃ high temperature materials, its tensile strength can usually reach 800MPa. Due to its excellent comprehensive mechanical properties, oxidation resistance and corrosion resistance, superalloy materials have become indispensable materials for key components in petrochemical, nuclear energy, aviation and other industrial fields that withstand high temperatures, corrosion, loads and oth...

AI Technical Summary

Problems solved by technology

[0005] However, the existing nickel-based superalloys contain a wide variety of strengthening elements, and the composition of elements in the alloy is often as high as more than twelve types except for impurities, which increases the cost to a certain extent; on the other hand, the existing nickel-based superalloys Most superalloys require a combination of multiple strengthening elements to obtain better mechanical strength. Once the type of elements is reduced, the strength of the alloy will be greatly affected, and its high-temperature durability cannot be guaranteed.

Images